From: Michael Buesch <[EMAIL PROTECTED]>
There is a potential race condition in the periodic_work_handler routine
of bcm43xx-softmac. In addition to fixing this condition, the size of code is
reduced by moving the mutex lock outside the if.
Signed-off-by: Larry Finger <[EMAIL PROTECTED]>
---
Index: wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.c
===================================================================
--- wireless-2.6.orig/drivers/net/wireless/bcm43xx/bcm43xx_main.c
+++ wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.c
@@ -3164,12 +3164,12 @@ static void bcm43xx_periodic_work_handle
u32 savedirqs = 0;
int badness;
+ mutex_lock(&bcm->mutex);
badness = estimate_periodic_work_badness(bcm->periodic_state);
if (badness > BADNESS_LIMIT) {
/* Periodic work will take a long time, so we want it to
* be preemtible.
*/
- mutex_lock(&bcm->mutex);
netif_tx_disable(bcm->net_dev);
spin_lock_irqsave(&bcm->irq_lock, flags);
bcm43xx_mac_suspend(bcm);
@@ -3182,7 +3182,6 @@ static void bcm43xx_periodic_work_handle
/* Periodic work should take short time, so we want low
* locking overhead.
*/
- mutex_lock(&bcm->mutex);
spin_lock_irqsave(&bcm->irq_lock, flags);
}
-
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